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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Work logged] (HIVE-23069) Memory efficient iterator should be used during replication.
Date Wed, 15 Jul 2020 09:19:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-23069?focusedWorklogId=459159&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-459159
]

ASF GitHub Bot logged work on HIVE-23069:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 15/Jul/20 09:18
            Start Date: 15/Jul/20 09:18
    Worklog Time Spent: 10m 
      Work Description: aasha commented on a change in pull request #1225:
URL: https://github.com/apache/hive/pull/1225#discussion_r454911634



##########
File path: itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenarios.java
##########
@@ -1559,6 +1645,76 @@ public void testIncrementalLoad() throws IOException {
     verifyRun("SELECT a from " + replDbName + ".ptned WHERE b=2", ptnData2, driverMirror);
   }
 
+  @Test
+  public void testIncrementalLoadLazyCopy() throws IOException {

Review comment:
       You can add this test in the mini hdfs set up to make sure data copy is happening correctly
in case of lazy load false and true.




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 459159)
    Time Spent: 3h 50m  (was: 3h 40m)

> Memory efficient iterator should be used during replication.
> ------------------------------------------------------------
>
>                 Key: HIVE-23069
>                 URL: https://issues.apache.org/jira/browse/HIVE-23069
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Pravin Sinha
>            Assignee: Pravin Sinha
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HIVE-23069.01.patch, HIVE-23069.02.patch
>
>          Time Spent: 3h 50m
>  Remaining Estimate: 0h
>
> Currently the iterator used while copying table data is memory based. In case of a database
with very large number of table/partitions, such iterator may cause HS2 process to go OOM.
> Also introduces a config option to run data copy tasks during repl load operation.



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